Draft gear and spring seat therefor,申请号US19330661271-传众专利搜索

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发明名称	Draft gear and spring seat therefor
摘要
申请公布号	US1972957(A)	申请公布日期	1934.09.11
申请号	US19330661271	申请日期	1933.03.17
申请人	CARDWELL WESTINGHOUSE COMPANY	发明人	SPROUL DONALD F.
分类号	B61G9/10	主分类号	B61G9/10
代理机构		代理人
主权项
地址

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